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Eh, if it's only a few times a year it's not that bad, right?
Yeah, working on it.

The obvious answer is "autism", but it just werks. Despite the map being the same, monsters, dwellings and treasure are randomized and you can achieve your objective in many different ways. Anything from going with a Sorceress and steamrolling everything to picking Paladin and succeeding despite everything it entails, up to and including the defeat of all conspirators.